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Question

Ciliary muscle  while reading a book and  while driving.
  1. flattens
  2. expands
  3. contracts
  4. weakens


Solution

The correct options are
B expands
C contracts
Ciliary muscles contract to make the eyelens thicker which reduces the focal length and thus enables us to see nearby objects (eg: while reading a book). It expand/relax to make the eyelens thinner and thereby increasing its focal length to enable us to see far off objects (eg: while driving).

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